KR20020070729A - Signal repeater for radio communication system - Google Patents

Abstract

PURPOSE: A signal relay apparatus for a wireless communication system is provided to match the second generation and the third generation RF(Radio Frequency) signals having inter-different frequencies as one, distribute the matched one RF signal, and transmit and receive the RF signal. CONSTITUTION: An indoor signal repeater(200) receives the second generation and third generation signals, performs a filtering between transmitting and receiving bands, a signal matching, and a signal distribution, and transmits the signal to one feeder. An outdoor signal repeater(300) distributes the signal transmitted through the feeder according to frequency bands, and transmits the distributed signals to the second generation and third generation mobile communication terminals(140,150). The outdoor signal repeater(300) amplifies RF signals having inter-different frequencies transmitted through the second generation and third generation mobile communication terminals(140,150), matches the amplified RF signal as one RF signal, and transmits the matched RF signal through the feeder.

Description

Signal relay device for wireless communication system {SIGNAL REPEATER FOR RADIO COMMUNICATION SYSTEM}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a signal relay device, and more particularly, to a signal relay device of a wireless communication system for receiving and matching signals of second and third generations having different frequency bands, and transmitting and receiving wireless signals between a base station and a mobile communication terminal. It is about.

In general, the development of the information and communication field, which is essential in the highly information society, is spreading all over the world, and accordingly, research and development related to the information and communication field is actively progressing.

In particular, the development of the mobile communication field in the field of information and communication is not only wide market, but also the rapid development of research and development is actively participating in the mobile communication field in the countries of the world, the demand is greatly increased.

Among these wired and wireless communication networks, portable communication devices such as a portable terminal or a wireless call receiver can be easily carried by users, and can use the phone exponentially because they can check and receive simple messages as well as make phone calls on the go. Doing.

On the other hand, mobile communication systems are generally classified by generation. The second generation is divided into analog cellular, the second generation is digital cellular, and the third generation is FPLMTS (Future Public Mobile Telecommunication System; IMT-2000).

In the IMT-2000 system, the third generation mobile communication system, the subscriber device uses a radio subscriber network of 2.3 to 2.4 GHz and an IMT-2000 frequency band of 1.885 to 2.205 GHz and 2.110 to 2.200 GHz, unlike the existing wired network. The performance varies greatly.

Existing signal processing devices are in use by directly connecting the feeder line between the base station and the antenna, but have to install and operate a separate feeder line when expanding the system for the IMT-2000 at the same base station. However, there is no way to solve this problem.

An object of the present invention is to solve the problems of the prior art as described above, by matching and distributing second and third generation radio signals having different frequencies into a single signal to provide a radio signal between a base station and a mobile communication terminal. The present invention provides a signal relay device of a wireless communication system for transmitting and receiving.

On the other hand, when the relay method of the second generation mobile communication system is applied to the signal relay device of the third generation, as shown in FIG. 2, the second signal is stored in the indoor signal repeater 12 and the outdoor signal repeater 13. A matcher and a divider may be mounted to match and distribute a radio signal having a frequency of the generation mobile communication system 10 and a radio signal having a frequency of the third generation mobile communication system 11.

Here, the second generation refers to mobile communication terminals, mobile communication systems, and antennas for mobile communication such as PCS and cellular, which are being used, and the third generation refers to mobile communication terminals and mobile communication systems used for the IMT-2000 to be serviced in the future. It is called an antenna for mobile communication.

However, the mounting of the matcher and the splitter in the indoor signal repeater 12 and the outdoor signal repeater 13 may be used to transmit radio signals having different frequencies output from the second and third mobile communication systems 10 and 11. As the insertion loss occurs at least 7 dB, the transmission power of the second and third generation mobile communication systems 10 and 11 must be increased by four times or more, and the reception sensitivity is reduced by four times.

In order to achieve the above object, the present invention provides a signal relay apparatus for transmitting and receiving wireless signals between second and third generation mobile communication systems and second and third generation mobile communication terminals that output radio signals having different frequencies. An indoor signal repeater for receiving and transmitting the second generation and third generation signals, transmitting and receiving inter-band filtering, signal matching, and signal distribution to one feeder, and distributing signals transmitted through the feeder for each frequency band. Transmit to the second and third generation mobile communication terminals, amplify a radio signal having a different frequency transmitted through the second and third generation mobile communication terminals, match it with one wireless signal, and transmit it through a feed line It includes an outdoor signal repeater.

1 is a block diagram showing a signal relay device of a wireless communication system according to the present invention;

2 is a block diagram showing a signal relay device for a conventional wireless communication system;

3 is an exemplary diagram illustrating a frequency band passing through a signal relay device of a second generation and a third generation mobile communication system.

<Description of the code | symbol about the principal part of drawing>

10, 100: second generation mobile communication system

11, 110: third generation mobile communication system

14, 120: antenna for second generation mobile communication

15, 130: third generation mobile communication antenna

140: second generation mobile communication terminal 150: third generation mobile communication terminal

12, 200: indoor signal repeater 13, 300: outdoor signal repeater

210: first signal transceiver 220: second signal transceiver

310: third signal transceiver 320: fourth signal transceiver

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a block diagram showing a signal relay device of a wireless communication system according to the present invention.

First, prior to the description of the present invention, the second generation refers to mobile communication terminals, mobile communication systems, and antennas for mobile communication such as PCS and cellular, which are being used, and the third generation is used for IMT-2000, which will be serviced in the future. A communication terminal, a mobile communication system, and an antenna for mobile communication are called.

As shown in FIG. 1, a signal relay device of a wireless communication system is configured to differently output radio signals having different frequencies from the second generation mobile communication system 100 and the third generation mobile communication system 110, which are base stations. After receiving and amplifying through a port, it matches with one signal, transmits the matched radio signal through a feeder line, and converts a radio signal having a different frequency band into a radio signal having a different frequency band. The second generation mobile communication system 100 and the indoor signal repeater 200 to be output to the third generation mobile communication system 110 and amplified matched radio signals received through the feed line for the second generation mobile communication And transmits to the third generation mobile communication terminal 150 and the second generation mobile communication terminal 140 corresponding to the antenna 120 and the third generation mobile communication antenna 130. The outdoor signal repeater 300, which amplifies a radio signal having a different frequency transmitted through the mobile communication antenna 120 and the third generation mobile communication antenna 130, matches with one wireless signal, and transmits the same through a feed line. Include.

Here, the indoor signal repeater 200 and the outdoor signal repeater 300 has a resonator structure using a duplexer method.

As shown in FIG. 3, since the pass-frequency bands of the signal relay devices of the second generation mobile communication system 100 and the third generation mobile communication system 110 are different from each other, the second generation mobile communication is required to transmit through one feed line. The radio signal transmitted from the communication system and the third generation mobile communication system must be matched into one signal, and the matched radio signal must be distributed by frequency band.

The indoor signal repeater 200 includes a first signal transceiver 210, a second signal transceiver 220, and input / output ports 1, 2, and 3.

The first signal transceiver 210 receives and filters a wireless signal transmitted from the second generation mobile communication system 100, which is a base station, through the port 1, and then, through the port 3 and one feed line, an outdoor signal repeater. A second generation mobile communication system receiving a wireless signal having a frequency of the second generation mobile communication terminal 140 among the wireless signals output to the signal 300 and matched with one signal output from the outdoor signal repeater 300 ( 100 through the port (1).

The second signal transceiver 220 receives and filters the wireless signal of the third generation mobile communication system 110 transmitted from the third generation mobile communication system 100, which is a base station, through the port 2, and then filters the outdoor signal. A third generation mobile communication system receiving a wireless signal having a frequency of the third generation mobile communication terminal 150 from among wireless signals matched to one signal output from the outdoor signal repeater 300, 110 through the port (2).

The outdoor signal repeater 300 includes a third signal transceiver 310, a fourth signal transceiver 320, and ports 4, 5, and 6.

The third signal transceiver 310 receives the wireless signal of the second generation mobile communication terminal 140 through the second generation mobile communication antenna 120 and the port 5 and filters the indoor signal through one feed line after filtering. The second generation mobile communication terminal (300) is transmitted to the repeater 200 and the wireless signal matched to the one signal received from the indoor signal repeater 200 through the port 5 and the second generation mobile communication antenna 120 ( 140).

The fourth signal transmitting and receiving unit 320 receives the wireless signal of the third generation mobile communication terminal 150 through the third generation mobile communication antenna 130 and the port 6 through the one signal feeder indoor signal repeater ( And transmits the third generation through the port 6 and the third generation mobile communication antenna 130 by filtering and distributing the wireless signal matched with the one signal received from the indoor signal repeater 200. Transmit to communication terminal 150.

An operation process of the signal relay device for a wireless communication system having the above configuration is described below.

In order to facilitate understanding of the present invention, a signal having a frequency output from the second generation mobile communication system 100 may be a first wireless signal, and a signal having a frequency output from the third generation mobile communication system 110 may be a second wireless signal. It is assumed to be described.

When the second generation mobile communication system 100 and the third generation mobile communication system 110 output the first radio signal and the second radio signal, the output first radio signal and the second radio signal are the indoor signal repeater 200. Is transmitted to the outdoor signal repeater 300 through ports 1 and 2 of FIG.

The transmitted first and second wireless signals are filtered by the first signal transceiver 210 and the second signal transceiver 220, and the filtered first and second wireless signals are converted into one signal. It is matched and transmitted to the outdoor signal repeater 300 through the port 3 and one feed line.

The signal transmitted to the outdoor signal repeater 300 is distributed and filtered in the service frequency band and transmitted to the third signal transceiver 310 and the fourth signal transceiver 320.

Here, the first wireless signal, which is a signal output from the second generation mobile communication system 100, is transmitted to the third signal transmission / reception unit 310 and is transmitted through the second generation mobile communication antenna 120 connected to the port 5. The second generation mobile communication terminal 140 is transmitted.

The second wireless signal, which is a signal output from the third generation mobile communication system 110, is transmitted to the third signal transceiving unit 310 to generate the third generation through the third generation mobile communication antenna 130 connected to the port 6. It is transmitted to the mobile communication terminal 150.

As described above, the present invention receives and amplifies a radio signal having different frequencies transmitted from the third generation mobile communication system and the second generation mobile communication system, matches the signal with one signal, and transmits the signal to the power supply line. Amplifies the matched radio signal received through the indoor signal repeater and the feeder line, which distributes the matched radio signal having the radio signal transmitted from the generation mobile communication terminal and the third generation mobile communication terminal, and transmits it to the corresponding mobile communication system. The mobile communication system includes an outdoor signal repeater which is distributed by frequency band and transmitted to a corresponding mobile communication terminal, and amplifies a radio signal having a different frequency, matches it with one radio signal, and transmits the signal to an indoor signal repeater through a feed line. 3rd generation mobile communication system construction by using signal relay The service can be made smoothly at the secured location of the second generation mobile communication system, and economical and significant savings can be achieved by using the third generation mobile communication system and the second generation mobile communication system together as one signal relay device. .

On the other hand, the present invention is not limited to the above-described embodiment, various modifications are possible by those skilled in the art within the spirit and scope of the present invention described in the claims to be described later.

Claims (4)

In the signal relay device for transmitting and receiving wireless signals between the second generation and third generation mobile communication systems and the second generation and third generation mobile communication terminal for outputting a radio signal having a different frequency, An indoor signal repeater that receives the second and third generation signals, inputs and outputs, transmits, receives, and transmits to one feeder by filtering, signal matching, and signal distribution between transmission and reception bands; And The signal transmitted through the feeder line is distributed for each frequency band and transmitted to the second and third generation mobile communication terminals, and a radio signal having a different frequency transmitted through the second and third generation mobile communication terminals is transmitted. A signal relay device of a wireless communication system including an outdoor signal repeater for amplifying and then matching and transmitting a single wireless signal through a feed line. The method of claim 1, The indoor signal repeater, The wireless signal output from the second generation mobile communication system is received, filtered and matched, and among the one wireless signal matched with the wireless signal of the second and third generation mobile communication terminals transmitted from the outdoor signal repeater. A first signal transmission / reception unit for transmitting a signal of a second generation mobile communication terminal to the second generation mobile communication system; The wireless signal output from the third generation mobile communication system is received, filtered and matched, and the wireless signal from the second and third generation mobile communication terminals transmitted from the indoor signal repeater is matched with one of the wireless signals. And a second signal transceiver for transmitting a signal of a third generation mobile communication terminal to the third generation mobile communication system. The method of claim 1, The outdoor signal repeater, Receives, filters, and distributes a wireless signal transmitted through the feeder line to transmit a signal of the second generation mobile communication system to the second generation mobile communication terminal, and the wireless signal of the second generation mobile communication terminal is filtered and matched. A third signal transmitting and receiving unit for transmitting to the feed line by Receives, filters, and distributes a wireless signal transmitted through the feeder line to transmit a signal of the third generation mobile communication system to the third generation mobile communication terminal, and the wireless signal of the third generation mobile communication terminal is filtered and matched. And a fourth signal transceiver for transmitting to the feed line. The method of claim 1, The indoor signal repeater and the outdoor signal repeater, A signal relay device for a wireless communication system, comprising a resonator structure using a duplexer method.